Cross-Cell V2X Message Delivery via Network-Coordinated Resource Pools
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in LTE networks, lack efficient mechanisms for delivering time-critical messages between devices belonging to different cells or operators, which is crucial for vehicle-to-everything (V2X) communication, especially in scenarios where direct communication is necessary for safety and reliability.
Innovation Solution
A method and apparatus for transmitting time-critical messages using device-to-device (D2D) technology, where a user equipment (UE) receives a grant of resources from a network and transmits the message to another UE, utilizing a common or dedicated resource pool for reliable and efficient communication across different cells and operators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct device-to-device communication is implemented between UEs in different cells, then message delivery reliability is improved, but network complexity increases due to resource coordination across multiple cells and operators
Solution Approach 1:
The patent introduces a network entity (e.g., base station or core network element) as an intermediary to manage and coordinate D2D communication resources across different cells and operators. This intermediary handles resource allocation, conflict resolution, and message routing, thereby improving delivery reliability without requiring direct complex coordination between all participating devices and networks.
Solution Approach 2:
The patent establishes a universal resource pool that can be shared across multiple cells and operators for D2D communication. This universal resource allocation mechanism allows the same resource management framework to serve multiple purposes and multiple network operators, reducing overall system complexity while maintaining reliable cross-cell message delivery.
2Reliability
If time-critical messages are transmitted with high reliability across different cells, then service continuity is improved, but transmission latency increases due to resource grant procedures
Solution Approach 1:
The patent implements pre-allocation of D2D communication resources where resource pools are configured in advance for time-critical message transmission. UEs can immediately use these pre-configured resources without waiting for dynamic resource grants, thereby maintaining service continuity while minimizing transmission latency for urgent messages.
Solution Approach 2:
The patent employs dynamic resource allocation mechanisms that adapt resource assignment based on real-time communication needs and channel conditions. For time-critical messages, the system dynamically prioritizes resource allocation, allowing flexible adjustment of resource grants to reduce latency while ensuring reliable delivery when needed.
3Productivity
If common resource pools are used for D2D communication across different operators, then resource utilization efficiency is improved, but interference between operators increases
Solution Approach 1:
The patent applies local quality differentiation within the common resource pool by allocating specific frequency ranges, time slots, or spatial resources to different operators. This allows multiple operators to share the overall resource pool efficiently while maintaining isolated quality characteristics that prevent mutual interference, thereby achieving both high resource utilization and low interference.
Data Source
AI summary
A method and apparatus for transmitting a time-critical message in a wireless communication system is provided. A user equipment (UE) (e.g. vehicle UE (V-UE)) receives a grant of resources in a resource pool for the time-critical message from a network (e.g. eNodeB (eNB) or a road side unit (RSU) for vehicle-to-everything (V2X) communication), and transmits the time-critical message by using the granted resources to another UE. The time-critical message may correspond to V2X communication.